Device for truing up the valves of gas-engines, &amp;c.



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717N138; w gm wyww I; LR YA DEVICE FOR TRUING UP THE VALVES 0FGAS-ENGINES,&c. i\i.i..\.\' Camiaos SARUF-NT, Lowell, Mass. Filed Oct.20, 1905. Serial No. 283,598.

To all whom it may concern:

Be it known that I, ALLAN C. SARGENT, a. citizen of the United States,residing at Lowell, in the county of Middlcsex, State of Massachusetts,have invented a certain new and useful Im rovement in Devices for TruingUp the alves of Gas-Engines, &c., of which the following is aspecification, reference being had therein to the accompanying drawings.

The valves of gas and similar engines become pitted, and more or lesscovered with scale, so that after a certain amount ,of use they nolonger seat properly. So far as I am aware, the usual practice is toremove them from the engines and true them up byt either a tool or arotary grinder.

The general object of the invention is to provide a. simple, convenient,and practical device for use in train -up the valves of gas engines, andother lite valves, and more especially to provide a device suitable forthe use of an automobilist or motor-boat map with which any one mayeffect such truing-up whenever necessary.

A further ob'ect of the invention is to provide a han y portable devicefor the pur ose.

1e invention consists in a device havin featureswhich will now beexplained witli the aid of the accompanying drawings, in whichlatt'er,--

Figure 1 shows in side elevation a device in which the invention isembodied, with a valve applied thereto, certain ortions of the deviceeing broken away as liercinafter explained. Fig. 2 is an and elevationof the device of Fi 1, looking from the righthand side in Fig. 1, thesupporting-yoke for tho valvcrotating implement being removed andcertain portions being broken away.

F1 3 shows the supporting-yoke for the v a erotating implement,separately. a portion thereof being broken away. ig. 4 is a view insection on line 4, 4, of Fig. 2, showin I the means of supporting,securing, and

tit usting one of the truing-tools. Fig. 4

is an elevation of one of the truing tools,

detached. Fig. 4' is an end elevation of the said truing tool. Fig. 5 isa view in section on line 5, I), Fig. 1. Fig. 6 shows in side elevationa valve such as m invention is designed to operate upon. Fig. 7 showsthe conforming to that of the seating face 2 of said valve in endelevation, looking from the r ght in Fig. 6. Fig. 8 shows in sideelevation a suitable tool for use in rotating a valve like that of Figs.6 and 7 when apfilled to a device embodying the invention.

ig. 0 is an and elevation of the said tool, looking from the left inFig. 8.

The valve which is shown in Figs. (3 and T is well-known. It has 11 head1 provider] with a beveled seating face 2, and a cylin' drical stem 3.The device in which the invention resides is provided with a hearing orbearings adapted to receive the stem 3 of the valve, and within whichthe said stem may turn or rotate, and with one or more cuttin oralirading tools ada ted to act upon t ie seatin face 2 as the va ve isturned or rotated, to ress oil and true u the said face. The device isprovided wit a guide or hearing for an implement employed to effect theturning or rotating of the valve in convenient. manner. Preferably, thefixed part or frame of the device is constructed suitably for beinclamped in a vise for the purpose of enabling the device to be supported and held while the operation of trulug-up a valve is beingperformed.

llaving reference, now, to the illustrated embodiment of the invention,at 4 Fig. 1, is the fixed wart or frame of the tCVlCC, it being shape toenable it to lit between the jaws of a vise and be held secureliythereby. .'\t 41, 41, are hearings with whici the said fixed part orframe is provided to receive the stem 3 of a valve. The number andlength of the hearings may vary in piilCllCt. llushings 42, 42, areapplied to the same to fit the stem of the valve. Such bushings arercmovably secured in place in any suitable manner in order to enablethem tohe replaced hy others having bores of a ditlercnl diameter whenrequired, so as thereby to provide for accommodating valves having stemsof various sizes. A valve is shown applied in Fig. 1, with the stem 3thereof fitted within the bushings 42, 42.

At 5 is a tool for acting upon the seating face 2 of the valve. It is inthe present instance a cutting-blade, as shown best in Figs. 4, 4", and4*. formed for instance of steel. It is mounted in an arm 43 of thefixed part or frame 4. The said arm is recessed at 4-1 to form a pocketto receive the said tool, and is irovided with a clampingscrew 6 bywhich the tool is securely held in place with in the recess or pocket.The threaded stem of the said clam ing-screw works in a screwtlireadcdhole hat is tapped through one side-wall of the recess or pocket, andits inner end engages with one side of the tool. the tool being clampedbetween the said end and the opposite wall of the recess or pocket. Thetool is Sll ported in a position in which its working on ge has an angleor inclination the valve. To provide for adjustment of the tool towardand from the valve, and for variation of the angle or inclination of the-tool, the adjusting-screws 7, 7, are employed. The saidadjusting-screws engage with the bark of the tool at opposite point.s.inthe length of the latter. The threaded stems thereof work inscrew-threadcd holes which are tapped in the arm 43, and the inner endsthereof engage with the back of the tool. One or more tools 5 may beemployed. The device shown in the drawings is constructed to employthree. The fixed part or frame is furnished with a number ofsupportingarms 43 corresponding with the number of tools which isdesigned to be used. In Fig. 1 one tool is shown, the others and thesccuring and adjusting devices therefor being omitted and thecorresponding supporting arms being broken away. I contemplate in someinstances em loying a tool which is constituted of a slip or block ofcarborundum, emer or other suitable abrading ma terial in [)KICC of thesteel cutter.

In the use of the device, it is clamped in a vise or otherwise.conveniently held, and a valve is applied, substantially in the mannerwhich is represented in Fig. 1. The seating face 2 of the valve is)XOSSQtl against the tool I or tools 5, and the va ve is turned orrotated so as to produce the required action of the said tool or toolsupon the said face. The turning movement of the valve may becommunicatedthcreto by means of an implement on the order of a screw-driver having its cngaging end entered into the slit 11, Fig. 7, in theend of the valve. A convenient implement for the purpose is shown inFigs. 8 and 9, in which 8 is a shank having at one end thereof an ex)anded or widened blade 81. The shank 8 is designed to be clasped withinthe 'aws of a brace-bit. Upon inserting the said blade 81 into the slit11 and turnin the implement, meanwhile transmitting tirough' the latterpressure acting to press the seating face of the valve against the toolor tools, the new seat will be obtained.

A guide for supporting and steadying the turning implement isconstituted by the yoke .9, Figs. 1 and 3. The latter is three-armed,

and is secured to the arms 43, 43, of the fixed part or frame by meansof screws 91, one of which is shown in Fig. 1., which ass through holes94, 94, in the outer ends 0 the arms of the yoke. The said oke has aguide-bearing 92, Fi s. 1 am 3, within which the shank 8 of t 10 turningimplement is placed.

Vhat is claimed as the invention is,-

1. In a truing-up device for valves, the combination with a frameprovided with valve-centering devices and one or more truing-up toolsmounte upon the head-end of the said frame, of a guiding device alsomounted upon the said head-end and having a ide or rest adapted toremovably receive a t ng-stemmed separate hand-implement by which thecentered valve may be engaged and turned, and within which guide or restof a guide or rest in front of said tool or 1 tools, adapted for removaland replacement I to facilitate the insertion and removal ofthe valve,and also adapted to removably receive a long-stemmed separatehand'implement for use. in t-urning t-he valve, and support the saidimplement in line with the hearing or bearings the said guide or restpermittin free (.Ht wise movement of the said imp ement to engage thevalve and press the face of the latter into enga ement with the saidtool or tools, to be acte upon thereby.

In testimony whereof I affix my signature in presence of two witnesses.

ALLAN CAMERON SARGENT. Witnesses ()snoaiv H. CILLEY,

llHTlI A. NonMiNo'roN,

